Iron phosphate black powder purification device

Abstract

The utility model provides an iron phosphate black powder purifying device which comprises a mixing tank, a mixing device is mounted in the middle of the mixing tank, and a filtering device is mounted on the inner wall of the mixing tank; a vibration device is mounted on the outer wall of the mixing tank; a heating rod is fixedly mounted at the bottom of the discharging table; the bottom cover is movably connected with the outer wall of the material mixing pool through a movable shaft, the outer surface of the bottom cover is fixedly connected with an elastic screw, and the bottom cover can be controlled to be rotationally opened and rotationally closed by screwing and unscrewing a fixing screw; two mixing modes are designed, one mode is that when raw materials need to be mixed and scattered, a motor is started to drive a blade to mix, meanwhile, large-particle raw materials are converted into small particles, the materials are evenly mixed, a high-speed vibration machine drives powder attached to the inner wall to fall to an outlet, and residual raw materials can be thoroughly cleaned conveniently; precipitates are separated from raw materials through the leakage net, so that the precipitates are conveniently collected and are used for purifying iron phosphate.

Description

Technical Field

[0001] One or more embodiments of the present specification relate to the technical field of lithium iron phosphate batteries, and in particular to a device for purifying black iron phosphate powder. Background Art

[0002] The method of obtaining pure iron phosphate from iron phosphate black powder is a complex process involving multiple steps and condition control. High-purity iron phosphate products for batteries can be prepared through steps such as acid leaching, impurity removal, precipitation, aging and calcination.

[0003] The prior art application number is: 202321051815, and the patent name is: A Chinese utility model patent for a mixing device for recycling black powder of lithium iron phosphate batteries. It is described that "when the mixing is completed and the black powder attached to the mixing barrel and the mixing mechanism needs to be cleaned, the lifting cylinder is started to drive the sealing barrel cover to rise, so that the mixing mechanism can be taken out from the inside of the mixing barrel, and then the black powder attached to the mixing mechanism can be cleaned. When cleaning the inside of the mixing barrel, the mixing barrel is separated from the base by the handle, so that it is convenient to clean the inside of the mixing barrel. The mixing barrel is cleaned. Positioning struts at the bottom of the barrel cooperate with positioning holes on the base to prevent the barrel from rotating while mixing the black powder inside. This facilitates separation of the barrel from the base, making cleaning the barrel easier. However, to clean the black powder adhering to the inner wall, the barrel must first be separated from the base. After separation, the barrel is suspended in the air. Because the black powder is fine and light, cleaning it at this time can cause dust to fly into the air. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide an iron phosphate black powder purification device to solve the problem of incomplete cleaning of black powder adhering to the inner wall in the prior art.

[0005] Based on the above purpose, the utility model provides an iron phosphate black powder purification device, comprising a mixing tank, wherein a mixing device is installed in the middle of the mixing tank for mixing the materials;

[0006] A filtering device is installed on the inner wall of the mixing tank, which is used to put the purified liquid into the mixing tank and filter out the precipitate obtained after the reaction is completed;

[0007] A vibration device is installed on the outer wall of the mixing tank to shake off the raw materials attached to the inside to the bottom through vibration and collect them;

[0008] A discharge platform is fixedly installed at the bottom of the mixing tank, the bottom of the discharge platform is fixedly connected to the discharge port, and the end of the discharge port is fixedly connected to the bottom cover;

[0009] The surface of the discharging platform is sloped downward, and a heating rod is fixedly installed at the bottom of the discharging platform to heat the liquid raw materials contained in the mixing tank. After reaching the set temperature, the reaction can proceed normally.

[0010] Preferably, the mixing device includes a motor, the bottom of the motor is fixedly connected to the rotating shaft by bolts, and blades are fixedly installed in the middle and bottom of the rotating shaft to break up large solid particles put into the mixing tank or mix all raw materials. The blades are crescent-shaped curved blades.

[0011] Preferably, the filtering device comprises a mesh having evenly distributed small holes at the bottom thereof, so that the precipitate at the bottom can be quickly filtered when a wet purification method is adopted.

[0012] Preferably, the top of the leakage net is fixedly connected to the handle through a fixing buckle. When the handle is laid flat, it is flush with the bottom surface of the top cover and is placed on the platform at the top of the leakage net.

[0013] Preferably, the vibration device includes a high-speed vibrator, which drives the entire mixing tank to vibrate at high speed to prevent the raw materials from adhering to the inner wall of the mixing tank.

[0014] Preferably, the bottom cover is movably connected to the outer wall of the mixing tank through a movable shaft, and the outer surface of the bottom cover is fixedly connected to the loosening screw through a thread. By tightening and loosening the fixing screw, the bottom cover can be controlled to rotate open and rotate closed.

[0015] From the above description, it can be seen that the utility model provides an iron phosphate black powder purification device, and two mixing methods are designed in the black powder purification process. One is that when the raw materials need to be mixed and broken up, the starting motor drives the blade to convert large particles of raw materials into small particles while mixing, and the materials are mixed evenly. The high-speed vibrator drives the powder attached to the inner wall to fall to the outlet, which is convenient for thoroughly cleaning the residual raw materials. The second is that when the leachate is added for wet purification, the heating rod at the bottom heats the interior to the fixed temperature required for the reaction, and the precipitate is separated from the raw material through the filter, which is convenient for collecting the precipitate for purifying iron phosphate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only one or more embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a cross-sectional view of the utility model;

[0018] Figure 2It is a top view of the utility model;

[0019] Figure 3 This is the right side view of the utility model;

[0020] Figure 4 This is a cross-sectional view of the utility model;

[0021] Figure 5 This is a cross-sectional view of the utility model.

[0022] In the figure: 1. Motor; 2. Top cover; 3. Blade; 4. Rotating shaft; 5. Mixing tank; 6. Loose screw; 7. Bottom cover; 8. Discharge port; 9. Screen; 10. High-speed vibrator; 11. Discharge platform; 12. Fixing buckle; 13. Handle; 14. Heating rod. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Example 1:

[0026] like Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown, a device for purifying black iron phosphate powder is provided, comprising a mixing tank 5, wherein a mixing device is installed in the middle of the mixing tank 5 for mixing the materials;

[0027] A filtering device is installed on the inner wall of the mixing tank 5, which is used to put the purified liquid into the mixing tank 5 and filter out the precipitate obtained after the reaction is completed;

[0028] The outer wall of the mixing tank 5 is equipped with a vibration device for shaking the raw materials attached to the inside to the bottom by vibration and collecting them;

[0029] The bottom of the mixing tank 5 is fixedly installed with a discharge platform 11, the bottom of the discharge platform 11 is fixedly connected to the discharge port 8, and the end of the discharge port 8 is fixedly connected to the bottom cover 7;

[0030] The surface of the discharge platform 11 is sloped downward, and a heating rod 14 is fixedly installed at the bottom of the discharge platform 11 to heat the liquid raw material contained in the mixing tank 5. After reaching the set temperature, the reaction can proceed normally.

[0031] The mixing device includes a motor 1, the bottom of the motor 1 is fixedly connected to a rotating shaft 4 by bolts, and blades 3 are fixedly installed in the middle and bottom of the rotating shaft 4 to break up large solid particles put into the mixing tank 5 or mix all the raw materials;

[0032] The blade 3 is a crescent-shaped curved blade to reduce the contact area between the blade and the raw material and prevent the blade area from being too large, which would cause excessive raw material to adhere to the surface.

[0033] The bottom cover 7 is movably connected to the outer wall of the mixing tank 5 through a movable shaft, and the outer surface of the bottom cover 7 is fixedly connected to the loosening screw 6 through a thread. By tightening and loosening the fixing screw 6, the bottom cover 7 can be controlled to rotate open and rotate closed;

[0034] Among them, rubber rings are fixedly installed at the contact points between the bottom cover 7 and the outer wall of the mixing tank 5 to increase the overall sealing performance.

[0035] Example 2:

[0036] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a device for purifying black iron phosphate powder is provided, comprising a mixing tank 5, wherein a mixing device is installed in the middle of the mixing tank 5 for mixing the materials;

[0037] A filtering device is installed on the inner wall of the mixing tank 5, which is used to put the purified liquid into the mixing tank 5 and filter out the precipitate obtained after the reaction is completed;

[0038] The outer wall of the mixing tank 5 is equipped with a vibration device for shaking the raw materials attached to the inside to the bottom by vibration and collecting them;

[0039] The bottom of the mixing tank 5 is fixedly installed with a discharge platform 11, the bottom of the discharge platform 11 is fixedly connected to the discharge port 8, and the end of the discharge port 8 is fixedly connected to the bottom cover 7;

[0040] The surface of the discharge platform 11 is sloped downward, and a heating rod 14 is fixedly installed at the bottom of the discharge platform 11 to heat the liquid raw materials contained in the mixing tank 5. After reaching the set temperature, the reaction proceeds normally.

[0041] Among them, when using the wet purification method, some reactions require temperature control.

[0042] The filtering device includes a filter 9, and the bottom of the filter 9 is provided with evenly distributed small holes, which is used to quickly filter the sediment at the bottom when the wet purification method is adopted;

[0043] Among them, the leakage screen 9 and the outer wall of the leakage screen are made of corrosion-resistant materials to prevent the liquid put in from being highly corrosive and causing partial damage.

[0044] The top of the leakage net 9 is fixedly connected to the handle 13 through a fixing buckle 12;

[0045] Among them, the handle 13 is flush with the bottom surface of the top cover 2 when it is flat, and is placed on the platform at the top of the filter 9. After the internal reaction is completed, hold the handle and lift it up to lift out the internal filter frame as a whole to facilitate the collection of the required sediment.

[0046] Example 3:

[0047] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, a device for purifying black iron phosphate powder is provided, comprising a mixing tank 5, wherein a mixing device is installed in the middle of the mixing tank 5 for mixing the materials;

[0048] A filtering device is installed on the inner wall of the mixing tank 5, which is used to put the purified liquid into the mixing tank 5 and filter out the precipitate obtained after the reaction is completed;

[0049] The outer wall of the mixing tank 5 is equipped with a vibration device for shaking the raw materials attached to the inside to the bottom by vibration and collecting them;

[0050] The bottom of the mixing tank 5 is fixedly installed with a discharge platform 11, the bottom of the discharge platform 11 is fixedly connected to the discharge port 8, and the end of the discharge port 8 is fixedly connected to the bottom cover 7;

[0051] The surface of the discharge platform 11 is sloped downward, and a heating rod 14 is fixedly installed at the bottom of the discharge platform 11 to heat the liquid raw material contained in the mixing tank 5. After reaching the set temperature, the reaction can proceed normally.

[0052] The mixing device includes a motor 1, the bottom of the motor 1 is fixedly connected to a rotating shaft 4 by bolts, and blades 3 are fixedly installed in the middle and bottom of the rotating shaft 4 to break up large solid particles put into the mixing tank 5 or mix all the raw materials;

[0053] The blade 3 is a crescent-shaped curved blade to reduce the contact area between the blade and the raw material and prevent the blade area from being too large, which would cause excessive raw material to adhere to the surface.

[0054] The vibration device includes a high-speed vibrator 10, which drives the mixing tank 5 to vibrate at high speed to prevent the raw materials from adhering to the inner wall of the mixing tank 5;

[0055] Among them, through vibration, the raw materials attached to the inner wall fall to the bottom, which is convenient for collecting the attached residual materials.

[0056] The bottom cover 7 is movably connected to the outer wall of the mixing tank 5 through a movable shaft, and the outer surface of the bottom cover 7 is fixedly connected to the loosening screw 6 through a thread. By tightening and loosening the fixing screw 6, the bottom cover 7 can be controlled to rotate open and close.

[0057] Among them, rubber rings are fixedly installed at the contact points between the bottom cover 7 and the outer wall of the mixing tank 5 to increase the overall sealing performance.

[0058] Working principle: When raw materials need to be mixed, open the top cover 2 and put the raw materials into the mixing tank 5. If there are many large particles in the raw materials that need to be broken up, turn on the motor, and the motor drives the blade 3 on the rotating shaft to rotate, breaking up the large particles of the material while mixing the raw materials evenly. After the end, loosen the tightening screw 6, unscrew the bottom cover 7, release the material, turn on the high-speed vibrator 10, and let the material attached to the inner wall fall off.

[0059] When wet purification is adopted, liquid leachate is added, and the leachate reacts with the black powder to produce a precipitate. The built-in filter 9 is used to separate the precipitate from the black powder. After the reaction is completed, the handle is lifted to separate the filter from the mixing tank, and the precipitate is collected.

[0060] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Within the scope of the present invention, the above embodiments or technical features in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0061] The embodiments of the present invention are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for purifying black iron phosphate powder, comprising a mixing tank (5), characterized in that: A mixing device is installed in the middle of the mixing tank (5) for mixing the materials; A filtering device is installed on the inner wall of the mixing tank (5) for feeding the purified liquid into the mixing tank (5) and filtering out the precipitate obtained after the reaction is completed; A vibration device is installed on the outer wall of the mixing tank (5) to shake the raw materials attached to the inside to the bottom by vibration and collect them; A discharge platform (11) is fixedly installed at the bottom of the mixing tank (5), the bottom of the discharge platform (11) is fixedly connected to the discharge port (8), and the end of the discharge port (8) is fixedly connected to the bottom cover (7); The surface of the discharge platform (11) is sloped downward, and a heating rod (14) is fixedly installed at the bottom of the discharge platform (11) for heating the liquid raw material contained in the mixing tank (5) to facilitate normal reaction after reaching the set temperature.

2. The iron phosphate black powder purification device according to claim 1, characterized in that: The mixing device comprises a motor (1), the lower portion of the motor (1) is fixedly connected to a rotating shaft (4) by means of bolts, and blades (3) are fixedly mounted at the middle and bottom of the rotating shaft (4) for breaking up large solid particles put into a mixing tank (5) or for mixing all raw materials. Wherein, the blade (3) is a crescent-shaped curved blade.

3. The iron phosphate black powder purification device according to claim 1, characterized in that: The filtering device comprises a filter (9), and the bottom of the filter (9) is provided with evenly distributed small holes, so that the precipitation at the bottom can be quickly filtered when a wet purification method is adopted.

4. The iron phosphate black powder purification device according to claim 3, characterized in that: The top of the leakage net (9) is fixedly connected to the handle (13) via a fixing buckle (12); The handle (13) is flush with the bottom surface of the top cover (2) when it is in a flat state and is placed on the platform at the top of the filter (9).

5. The iron phosphate black powder purification device according to claim 1, characterized in that: The vibration device comprises a high-speed vibrator (10), which drives the entire mixing tank (5) to vibrate at high speed to prevent the raw materials from adhering to the inner wall of the mixing tank (5).

6. The iron phosphate black powder purification device according to claim 1, characterized in that: The bottom cover (7) is movably connected to the outer wall of the mixing tank (5) via a movable shaft, and the outer surface of the bottom cover (7) is fixedly connected to the loosening screw (6) via a thread. By tightening and loosening the loosening screw (6), the bottom cover (7) can be controlled to rotate open and rotate closed.

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